US Bridges

Bay City-Forestvil over Wiscoggin Drain

Good

Tuscola County, Michigan · Sec 6-7 Columbia Twp · Structure no. 000000000010485

Built
2018
7 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
1,854
2016 count
Owner
County
County Highway Agency

About this bridge

Bay City-Forestvil over Wiscoggin Drain is a prestressed concrete stringer/multi-beam or girder carrying Bay City-Forestvil over Wiscoggin Drain in Tuscola County, Michigan. It was built in 2018, so it is 7 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,854 vehicles a day, roughly 5% of them trucks, projected to reach 3,345 by 2036. The structure is 72 ft (21.9 m) long and 44 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesBay City-Forestvil
CrossesWiscoggin Drain
LocationSec 6-7 Columbia Twp
RouteCounty Highway 7996
Coordinates43.65393, -83.45735
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.9 US tons
Inventory rating72.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length72 ft (21.9 m)
Longest span69 ft (21.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,854 (2016)
Projected traffic3,345 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$310,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bay City-Forestvil over Wiscoggin Drain built?

It was built in 2018, making it 7 years old in 2025.

What condition is Bay City-Forestvil over Wiscoggin Drain in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Bay City-Forestvil over Wiscoggin Drain carry?

About 1,854 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Bay City-Forestvil over Wiscoggin Drain?

The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21.1 m) and a deck 44 ft wide.

Who owns Bay City-Forestvil over Wiscoggin Drain?

It is owned by the County Highway Agency.